Inghilleri, L., & Pratt, S. (2014). Exceptional service, exceptional profit: The secrets of building a five-star customer service organization (Unabridged.). Your Coach Digital.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInghilleri, Leonardo, और Sean Pratt. Exceptional Service, Exceptional Profit: The Secrets of Building a Five-star Customer Service Organization. Unabridged. Rego Park: Your Coach Digital, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रInghilleri, Leonardo, और Sean Pratt. Exceptional Service, Exceptional Profit: The Secrets of Building a Five-star Customer Service Organization. Unabridged. Your Coach Digital, 2014.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.